Efficient edge grinding machine for inner and outer simultaneous trimming of shoe sole

Abstract

The invention discloses an efficient edge grinding machine capable of simultaneously repairing inside and outside for a sole, which relates to the technical field of sole grinding and comprises a rack, a lifting mechanism, a positioning assembly with a placing groove, a shoe stabilizing mechanism, a multi-shaft adjusting arm, a surrounding adjusting mechanism and a wall grinding mechanism, the wall grinding mechanism comprises an inner grinding head, an outer grinding head, an inner adjusting mechanism, an outer adjusting mechanism, a first supporting plate, a second supporting plate and a distance adjusting mechanism. The shoe grinding device has the advantages that the position of a shoe is stabilized through the positioning assembly and the shoe stabilizing mechanism, then the angle and height of the inner grinding head and the outer grinding head are adjusted, and the distance between the inner grinding head and the outer grinding head is adjusted, so that it is guaranteed that the inner grinding head and the outer grinding head can well attach and press the inner wall and the outer wall of a shoe sole, and the inner grinding head and the outer grinding head rotate to conduct grinding treatment; the overall position of the wall grinding mechanism is synchronously adjusted through the multi-shaft adjusting arm so that it can be guaranteed that the multi-shaft adjusting arm can be stably attached to and make contact with the shoe sole during annular transposition, the effect of grinding the inner wall and the outer wall of the shoe sole at the same time is achieved, and the grinding efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sole grinding, and more specifically, to an efficient edge grinding machine for simultaneous internal and external repair of soles. Background Art

[0002] The outer side of the sole (generally including the outer perimeter and the inner perimeter) is ground using a grinding machine, mainly for the following purposes: Improve the bonding effect: Grinding can make the surface of the sole rougher, increase the surface area, and thus improve the adhesion of glue or other adhesives. This helps to ensure a stronger bond between the structures during subsequent processing and production; Remove burrs and unevenness: During the production process, the sole may have some burrs, flash, or uneven parts. Grinding can remove these defects, making the sole smoother and neater, and improving the overall quality and appearance of the shoe; etc. As shown in the existing sole grinding equipment "such as application number: CN202110240509.3, a sole grinding equipment", "side grinding devices, front grinding devices" are respectively provided at different workstations, which can be used to process the outer perimeter and the inner perimeter of the sole respectively; And as shown in "such as application number: CN202222680578.9, a grinding tool for grinding the sole of labor protection shoes", after clamping the outer perimeter of the sole, the inner perimeter of the sole can be ground. As shown in "application number: CN202020480470.3, a sole grinding device", after pressing the sole up and down, the outer perimeter of the sole can be ground; Although the above-mentioned sole grinding equipment can complete the grinding of the outer perimeter and the inner perimeter of the sole, it has the disadvantage of low efficiency due to the need for separate processing. Summary of the Invention

[0003] The purpose of the present invention is: to solve the above technical problems, the present invention provides an efficient edge grinding machine for simultaneous internal and external repair of soles.

[0004] The present invention specifically adopts the following technical solutions to achieve the above purpose: The present invention provides an efficient edge grinding machine for simultaneous internal and external repair of soles, including; A frame; A lifting mechanism, which is fixedly installed on the frame; It further includes; A positioning component with a placement groove, which is arranged on the frame, and a sole with inner and outer perimeters is attached to the placement groove; A sole stabilizing mechanism, which is fixedly installed at the output end of the lifting mechanism, and the sole stabilizing mechanism contacts the sole to fit and press it tightly driven by the operation of the lifting mechanism; A multi-axis adjusting arm is provided outside the shoe stabilizing mechanism; A circumferential adjusting mechanism is fixedly installed at the output end of the lifting mechanism, and the multi-axis adjusting arm is fixedly installed at the output end of the circumferential adjusting mechanism to drive the multi-axis adjusting arm to surround the shoe stabilizing mechanism; A wall grinding mechanism is fixedly installed at the output end of the multi-axis adjusting arm for adjusting the position and angle of the wall grinding mechanism; The wall grinding mechanism includes an inner grinding head that fits against the inner periphery of the shoe sole, an outer grinding head that fits against the outer periphery of the shoe sole, an inner adjusting mechanism fixedly installed outside the inner grinding head for opening, closing, rotating, and adjusting the angle and height thereof, an outer adjusting mechanism fixedly installed outside the outer grinding head for opening, closing, rotating, and adjusting the angle and height thereof, a first support plate fixedly installed outside the inner adjusting mechanism, a second support plate fixedly installed outside the outer adjusting mechanism, and a distance adjusting mechanism fixedly installed between the first support plate and the second support plate for adjusting the distance therebetween. The output end of the multi-axis adjusting arm is fixed to the second support plate.

[0005] As a preferred technical solution of the present invention, the inner adjusting mechanism and the outer adjusting mechanism have the same structural composition.

[0006] As a preferred technical solution of the present invention, the outer adjusting mechanism includes a second electric push rod and a third electric push rod rotatably connected to the second support plate, a second servo motor fixed to the output end of the second electric push rod, and a connecting shaft fixed to the output end of the second servo motor. The outside of the connecting shaft is fixed to the outer grinding head, and the output end of the third electric push rod is rotatably connected to the outside of the second electric push rod; The second electric push rod and the third electric push rod of the inner adjusting mechanism are respectively rotatably connected to the first support plate, and the outside of the connecting shaft of the inner adjusting mechanism is fixed to the inner grinding head.

[0007] As a preferred technical solution of the present invention, the distance adjusting mechanism includes a cavity provided on the second support plate, a fourth electric push rod fixedly installed in the cavity, and a plug board fixedly installed on the first support plate. The output end of the fourth electric push rod is fixed to the plug board.

[0008] As a preferred technical solution of the present invention, the distance adjusting mechanism further includes a universal ball fixedly installed in the cavity and a ball groove provided on the plug board. The outside of the universal ball fits and moves inside the ball groove.

[0009] As a preferred technical solution of the present invention, the circumferential adjusting mechanism includes a thrust bearing fixedly installed at the output end of the lifting mechanism, a driven gear fixed to the periphery of the rotating end of the thrust bearing, a main gear meshing with the driven gear, and a first servo motor with an output end fixed to the main gear. The outside of the first servo motor is fixedly installed at the output end of the lifting mechanism, and the rotating end of the thrust bearing is fixedly installed with the multi-axis adjusting arm.

[0010] As a preferred technical solution of the present invention, the positioning assembly includes a template, a shoe groove provided at the top of the template, a positioning block fixed to the bottom of the template, and a positioning groove provided at the inner bottom end of the frame. The positioning block is fitted into the positioning groove, and the shoe groove is a placement groove.

[0011] As a preferred technical solution of the present invention, the shoe stabilizing mechanism includes a first electric push rod fixedly installed at the output end of the lifting mechanism, a connecting rod fixed to the output end of the first electric push rod, a pressing plate fixedly installed at the bottom end of the connecting rod, and a soft pad fixedly installed at the bottom end of the pressing plate. The outer side of the soft pad is in contact with the inner side of the shoe sole, and the first electric push rod is located inside the thrust bearing.

[0012] As a preferred technical solution of the present invention, the lifting mechanism includes a cylinder fixedly installed on the frame, a lifting plate fixedly installed at the output end of the cylinder, a guide sleeve fixedly installed on the outer side of the lifting plate, and a guide post for the outer sleeve of the guide sleeve to slide. The guide post is fixedly installed on the frame.

[0013] The beneficial effects of the present invention are as follows: The position of the shoe is stabilized by the positioning assembly and the shoe stabilizing mechanism. Then, the inner adjusting mechanism adjusts the angle and height of the inner grinding head, and the outer adjusting mechanism adjusts the angle and height of the outer grinding head. At the same time, the distance adjusting mechanism adjusts the distance between the inner grinding head and the outer grinding head to ensure that the inner grinding head and the outer grinding head can better fit and press the inner and outer walls of the shoe sole. The inner and outer walls of the shoe sole are polished under the rotation of the inner grinding head and the outer grinding head. The overall position of the grinding wall mechanism is synchronously adjusted by the multi-axis adjusting arm to ensure that the multi-axis adjusting arm can stably contact the shoe sole during the circular transposition, so as to achieve the effect of polishing the inner and outer walls of the shoe sole at the same time and improve the polishing efficiency. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is this Figure 1 schematic diagram of the partial structure A.

[0015] Reference numerals: frame - 1, lifting mechanism - 2, positioning component - 3, shoe stabilizing mechanism - 4, multi - axis adjusting arm - 5, perimeter adjusting mechanism - 6, wall grinding mechanism - 7, air cylinder - 21, lifting plate - 22, guide sleeve - 23, guide post - 24, template - 31, shoe groove - 32, positioning block - 33, positioning groove - 34, first electric push rod - 41, connecting rod - 42, pressing plate - 43, soft pad - 44, thrust bearing - 61, driven gear - 62, main gear - 63, first servo motor - 64, inner grinding head - 71, outer grinding head - 72, inner adjusting mechanism - 73, outer adjusting mechanism - 74, first support plate - 75, second support plate - 76, distance adjusting mechanism - 77, second electric push rod - 741, third electric push rod - 742, second servo motor - 743, connecting shaft - 744, groove cavity - 771, fourth electric push rod - 772, inserting plate - 773, universal ball - 774, ball groove - 775. Detailed implementation

[0016] As Figures 1-2 shown, the present invention provides: a high - efficiency internal and external trimming edge - grinding machine for shoe soles, comprising; frame 1; a lifting mechanism 2, which is fixedly installed on the frame 1 and is used to provide the driving force for height adjustment; The specific structure of the lifting mechanism 2 is as follows: The lifting mechanism 2 includes an air cylinder 21 fixedly installed on the frame 1, a lifting plate 22 fixedly installed at the output end of the air cylinder 21, a guide sleeve 23 fixedly installed on the outer side of the lifting plate 22, and a guide post 24 for the outer sleeve sliding movement of the guide sleeve 23, and the guide post 24 is fixedly installed on the frame 1; an external air supply device provides air source for the air cylinder 21, the output end of the air cylinder 21 is vertically downward, the lifting plate 22 is fixedly installed at the bottom end of the air cylinder 21, when the air cylinder 21 operates, it can drive the lifting plate 22 to adjust the height up and down, and the guide sleeve 23 fixed on the lifting plate 22 is sleeved on the outer side of the guide post 24 to provide sliding, so as to improve the guiding stability when the lifting plate 22 moves up and down; It also includes; a positioning component 3 with a placement groove, which is arranged on the frame 1, and a shoe sole with inner and outer perimeters is attached to the placement groove to facilitate the determination of the position of the placed shoe sole; The specific structure of the positioning component 3 is as follows: The positioning component 3 includes a template 31, a shoe groove 32 arranged at the top end of the template 31, a positioning block 33 fixedly arranged at the bottom end of the template 31, and a positioning groove 34 arranged at the bottom end inside the frame 1, the positioning block 33 is embedded and fitted in the positioning groove 34, and the shoe groove 32 is the placement groove; the template 31 is placed into the shoe groove 32 through the positioning block 33 for quick, accurate and stable placement and is convenient for replacing different types of templates 31, and the shoe groove 32 is the above - mentioned placement groove, and the shoe sole can be placed in the shoe groove 32; The shoe stabilizing mechanism 4 is fixedly installed at the output end of the lifting mechanism 2. Driven by the operation of the lifting mechanism 2, the shoe stabilizing mechanism 4 contacts the sole of the shoe to fit and press tightly. The specific structure of the shoe stabilizing mechanism 4 is as follows: The shoe stabilizing mechanism 4 includes a first electric push rod 41 fixedly installed at the output end of the lifting mechanism 2, a connecting rod 42 fixed to the output end of the first electric push rod 41, a pressing plate 43 fixedly installed at the bottom end of the connecting rod 42, and a soft pad 44 fixedly installed at the bottom end of the pressing plate 43. The outer side of the soft pad 44 fits the inner side of the sole of the shoe; the material of the soft pad 44 is rubber, and the output end of the first electric push rod 41 is vertically downward. When the first electric push rod 41 operates, it can synchronously drive the connecting rod 42, the pressing plate 43, and the soft pad 44 to move up and down. When moving downward until the soft pad 44 contacts the inner wall of the sole of the shoe, it can press tightly to stabilize the position of the sole of the shoe. The multi-axis adjustment arm 5 is arranged outside the shoe stabilizing mechanism 4; the multi-axis adjustment arm 5 is a multi-axis robot or the position adjustment structure (i.e., the base, the first robotic arm, the second robotic arm, the third robotic arm, and the fourth robotic arm) in the existing "Application No.: CN201821202054.6" and "Application No.: CN202421749101.4", which is used to provide the position adjustment functions of left and right, up and down, front and back, and rotation. The circumferential adjustment mechanism 6 is fixedly installed at the output end of the lifting mechanism 2, and the multi-axis adjustment arm 5 is fixedly installed at the output end of the circumferential adjustment mechanism 6 to drive the multi-axis adjustment arm 5 to surround the shoe stabilizing mechanism 4. The specific structure of the circumferential adjustment mechanism 6 is as follows: The circumferential adjustment mechanism 6 includes a thrust bearing 61 fixedly installed at the output end of the lifting mechanism 2, a driven gear 62 fixed to the outer periphery of the rotating end of the thrust bearing 61, a main gear 63 meshing with the driven gear 62, and a first servo motor 64 whose output end is fixed to the main gear 63. The outside of the first servo motor 64 is fixedly installed with the output end of the lifting mechanism 2, the rotating end of the thrust bearing 61 is fixedly installed with the multi-axis adjustment arm 5, and the first electric push rod 41 is located inside the thrust bearing 61; the first servo motor 64 is fixedly installed at the bottom end of the lifting plate 22. When the first servo motor 64 operates, it can drive the main gear 63 to rotate, thereby meshing and driving the driven gear 62 to rotate and synchronously driving the rotating end of the thrust bearing 61 to rotate. The multi-axis adjustment arm 5 is fixedly installed at the rotating end of the thrust bearing 61, that is, at the bottom end of the thrust bearing 61. When the thrust bearing 61 rotates, it can synchronously drive the multi-axis adjustment arm 5 to rotate, and the multi-axis adjustment arm 5 rotates and changes positions around the shoe stabilizing mechanism 4. The wall grinding mechanism 7 is fixedly installed at the output end of the multi-axis adjustment arm 5 to adjust the position and angle of the wall grinding mechanism 7 by the multi-axis adjustment arm 5. The wall grinding mechanism 7 includes an inner grinding head 71 that fits against the inner periphery of the shoe sole, an outer grinding head 72 that fits against the outer periphery of the shoe sole, an inner adjustment mechanism 73 fixedly installed outside the inner grinding head 71 for opening, closing, rotating, and adjusting the angle and height thereof, an outer adjustment mechanism 74 fixedly installed outside the outer grinding head 72 for opening, closing, rotating, and adjusting the angle and height thereof, a first support plate 75 fixedly installed outside the inner adjustment mechanism 73, a second support plate 76 fixedly installed outside the outer adjustment mechanism 74, and a distance adjustment mechanism 77 fixedly installed between the first support plate 75 and the second support plate 76 for adjusting the distance therebetween. The output end of the multi-axis adjustment arm 5 is fixed to the second support plate 76; The inner adjustment mechanism 73 is used to adjust the angle and height of the inner grinding head 71, the outer adjustment mechanism 74 is used to adjust the angle and height of the outer grinding head 72, and at the same time, the distance adjustment mechanism 77 is used to adjust the distance between the first support plate 75 and the second support plate 76. The adjusted distance is the distance between the inner grinding head 71 and the outer grinding head 72, so as to ensure that the inner grinding head 71 and the outer grinding head 72 can better fit and press the inner and outer walls of the shoe sole. During the rotation of the inner grinding head 71 and the outer grinding head 72, grinding treatment is carried out. The multi-axis adjustment arm 5 is used to synchronously adjust the overall position of the wall grinding mechanism 7 to ensure that the multi-axis adjustment arm 5 can stably fit and contact the shoe sole during circular transposition, thereby achieving the effect of simultaneously grinding the inner and outer walls of the shoe sole and improving the grinding efficiency; The pressing plate 43 and the soft pad 44 press the shoe sole in the center, and there is a distance between their outer periphery and the inner side wall of the shoe sole. This distance serves as the moving space for the inner grinding head 71 to rotate around, so as to prevent contact with the pressing plate 43 and the soft pad 44 and cause wear.

[0017] Among them, the inner adjustment mechanism 73 and the outer adjustment mechanism 74 have the same structural composition, and their functional operations for adjusting the inner grinding head 71 and the outer grinding head 72 are the same.

[0018] Among them, the outer adjustment mechanism 74 includes a second electric push rod 741 and a third electric push rod 742 that are rotatably connected to the second support plate 76, a second servo motor 743 fixed to the output end of the second electric push rod 741, and a connecting shaft 744 fixed to the output end of the second servo motor 743. The outside of the connecting shaft 744 is fixed to the outer grinding head 72, and the output end of the third electric push rod 742 is rotatably connected to the outside of the second electric push rod 741; The second electric push rod 741 and the third electric push rod 742 of the inner adjustment mechanism 73 are respectively rotatably connected to the first support plate 75, and the outside of the connecting shaft 744 of the inner adjustment mechanism 73 is fixed to the inner grinding head 71; Such as Figure 2As shown in the figure, at the bottom end of the second support plate 76, a rotating connection structure with a rotating shaft passing through a bearing seat is adopted to rotatably connect the second electric push rod 741 and the third electric push rod 742 (the second electric push rod 741 and the third electric push rod 742 fix the rotating shaft, and the bearing seat is fixedly installed at the bottom end of the second support plate 76). The rotation between the third electric push rod 742 and the second electric push rod 741 also adopts the above-mentioned rotation method for connection. The second electric push rod 741 adjusts the height of the external grinding head 72, and the third electric push rod 742 adjusts the inclination angle of the external grinding head 72. The second servo motor 743 operates to drive the rotation of the external grinding head 72; The bottom end of the corresponding first support plate 75 can also adopt this rotation method to install the internal adjustment mechanism 73, so as to adjust the height, inclination angle of the internal grinding head 71 and start and stop the rotation.

[0019] Among them, the distance adjustment mechanism 77 includes a cavity 771 provided on the second support plate 76, a fourth electric push rod 772 fixedly installed in the cavity 771, and a plug board 773 fixedly installed on the first support plate 75. The output end of the fourth electric push rod 772 is fixed to the plug board 773; by operating the fourth electric push rod 772, the plug board 773 can be driven to adjust the left and right positions, so as to adjust the distance between the first support plate 75 and the second support plate 76. The fourth electric push rod 772 is built into the cavity 771 and the plug board 773 moves in the cavity 771, which can greatly reduce the external occupied space and improve the structural simplicity; The distance adjustment mechanism 77 further includes a universal ball 774 fixedly installed in the cavity 771 and a ball groove 775 provided on the plug board 773. The outside of the universal ball 774 fits and moves in the ball groove 775; two groups of universal balls 774 are symmetrically fixedly installed at the top and bottom ends in the cavity 771, and each group is arranged in multiple numbers from left to right. Two groups of ball grooves 775 are symmetrically arranged at the top and bottom ends of the plug board 773 corresponding to the positions of the universal balls 774. The ball grooves 775 are strip-shaped with the strip ends facing left and right. The universal balls 774 roll in the ball grooves 775, so as to improve the stability when the plug board 773 moves (the ball groove 775 can be provided with a rubber layer to fit and move with the universal balls 774 to further improve the stability and enhance the wear resistance effect).

[0020] It also includes a controller (a PLC controller) fixedly installed outside the frame 1, which is connected to an external power supply to supply power to the electrical components in this case; additionally, since the multi-axis adjusting arm 5 and the wall grinding mechanism 7 need to rotate around, and there are components that need to be powered on among the multi-axis adjusting arm 5 and the wall grinding mechanism 7, for this, an over-bore conductive slip ring can be installed between the thrust bearing 61 and the lifting plate 22 for power connection (the fixed end of the over-bore conductive slip ring can be fixedly installed at the bottom end of the lifting plate 22, and the rotating end of the over-bore conductive slip ring is fixedly centered inside the rotating end of the thrust bearing 61. At this time, the stabilizing shoe mechanism 4 is located on the inner side of the over-bore conductive slip ring) or a battery can be installed on the multi-axis adjusting arm 5 and the wall grinding mechanism 7 and other methods can be used for power connection.

[0021] The control method of the present invention is controlled by manually starting and closing the switch. The wiring diagram of the power element and the power supply are common knowledge in the art, and the present invention is mainly used to protect mechanical devices, so the control method and wiring arrangement of the present invention will not be explained in detail.

[0022] The above shows and describes the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic features of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed claims.

[0023] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An efficient edge grinding machine for the inside and outside repair of shoe soles, comprising: a frame (1); a lifting mechanism (2) fixedly installed on the frame (1); Characterized in that, It further includes: a positioning component (3) with a placement groove, which is arranged on the frame (1), and a shoe sole with inner and outer edges is attached to the placement groove; a shoe stabilizing mechanism (4) fixedly installed at the output end of the lifting mechanism (2), and the shoe stabilizing mechanism (4) is driven by the operation of the lifting mechanism (2) to contact the shoe sole for fitting and pressing; a multi-axis adjusting arm (5) arranged outside the shoe stabilizing mechanism (4); a perimeter adjusting mechanism (6) fixedly installed at the output end of the lifting mechanism (2), and the multi-axis adjusting arm (5) is fixedly installed at the output end of the perimeter adjusting mechanism (6) for driving the multi-axis adjusting arm (5) to surround the shoe stabilizing mechanism (4); a wall grinding mechanism (7) fixedly installed at the output end of the multi-axis adjusting arm (5) for adjusting the position and angle of the wall grinding mechanism (7); The wall grinding mechanism (7) includes an inner grinding head (71) that fits the inner edge of the shoe sole, an outer grinding head (72) that fits the outer edge of the shoe sole, an inner adjusting mechanism (73) fixedly installed outside the inner grinding head (71) for opening, closing, rotating and adjusting the angle and height thereof, an outer adjusting mechanism (74) fixedly installed outside the outer grinding head (72) for opening, closing, rotating and adjusting the angle and height thereof, a first support plate (75) fixedly installed outside the inner adjusting mechanism (73), a second support plate (76) fixedly installed outside the outer adjusting mechanism (74), and a distance adjusting mechanism (77) fixedly installed between the first support plate (75) and the second support plate (76) for adjusting the distance therebetween. The output end of the multi-axis adjusting arm (5) is fixed to the second support plate (76).

2. The high-efficiency edge grinding machine for internal and external repair of a sole according to claim 1, characterized in that, The inner adjusting mechanism (73) and the outer adjusting mechanism (74) have the same structural composition.

3. The high-efficiency edge grinding machine for internal and external repair of a sole according to claim 2, characterized in that, The outer adjusting mechanism (74) includes a second electric push rod (741) and a third electric push rod (742) rotatably connected to the second support plate (76), a second servo motor (743) fixed to the output end of the second electric push rod (741), and a connecting shaft (744) fixed to the output end of the second servo motor (743). The outer side of the connecting shaft (744) is fixed to the outer grinding head (72), and the output end of the third electric push rod (742) is rotatably connected to the outer side of the second electric push rod (741); The second electric push rod (741) and the third electric push rod (742) of the inner adjusting mechanism (73) are respectively rotatably connected to the first support plate (75), and the outer side of the connecting shaft (744) of the inner adjusting mechanism (73) is fixed to the inner grinding head (71).

4. A high-efficiency edge grinding machine for the inner and outer repair of a sole according to claim 1, characterized in that, The distance adjusting mechanism (77) includes a cavity (771) arranged on the second support plate (76), a fourth electric push rod (772) fixedly installed in the cavity (771), and a plug board (773) fixedly installed on the first support plate (75). The output end of the fourth electric push rod (772) is fixed to the plug board (773).

5. The high-efficiency edge grinding machine for the inside and outside repair of a sole according to claim 4, characterized in that, The distance adjusting mechanism (77) further includes a universal ball (774) fixedly installed in the cavity (771) and a ball groove (775) arranged on the plug board (773). The outer side of the universal ball (774) is movably attached to the inside of the ball groove (775).

6. The high-efficiency edge grinding machine for internal and external repair of a sole according to claim 1, wherein, The circumferential adjustment mechanism (6) includes a thrust bearing (61) fixedly installed at the output end of the lifting mechanism (2), a slave gear (62) fixed to the periphery of the rotating end of the thrust bearing (61), a master gear (63) meshing with the slave gear (62), and a first servo motor (64) whose output end is fixed to the master gear (63). The outside of the first servo motor (64) is fixedly installed at the output end of the lifting mechanism (2), and the rotating end of the thrust bearing (61) is fixedly installed with the multi-axis adjustment arm (5).

7. The high-efficiency edge grinding machine for the inner and outer repair of the sole according to claim 6, characterized in that, The positioning assembly (3) includes a template (31), a shoe groove (32) provided at the top of the template (31), a positioning block (33) fixedly installed at the bottom of the template (31), and a positioning groove (34) provided at the inner bottom end of the frame (1). The positioning block (33) fits into the positioning groove (34) in a close-fitting manner, and the shoe groove (32) is a placement groove.

8. A high-efficiency edge grinding machine for inner and outer repair of shoe soles according to claim 7, characterized in that, The shoe stabilizing mechanism (4) includes a first electric push rod (41) fixedly installed at the output end of the lifting mechanism (2), a connecting rod (42) fixed to the output end of the first electric push rod (41), a pressing plate (43) fixedly installed at the bottom end of the connecting rod (42), and a soft pad (44) fixedly installed at the bottom end of the pressing plate (43). The outside of the soft pad (44) fits against the inner side of the shoe sole, and the first electric push rod (41) is located inside the thrust bearing (61).

9. The high-efficiency edge grinding machine for internal and external repair of a sole according to claim 1, characterized in that, The lifting mechanism (2) includes a cylinder (21) fixedly installed on the frame (1), a lifting plate (22) fixedly installed at the output end of the cylinder (21), a guide sleeve (23) fixedly installed on the outside of the lifting plate (22), and a guide post (24) for the outer sleeve of the guide sleeve (23) to slide. The guide post (24) is fixedly installed on the frame (1).

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